Printing



- Sept. 20, 1932.

T. F. PINDER PRINTING Filed Dec. 26, 1930 I I INVENTOR.

7%0/2106]? Fzizder ATTORNEY.

Patented Sept. 20,1932

. UNITED STATES rarlarrr orricn THOMAS F. ZPINDER, F MERION, PENNSYLVANIA PRINTING Application filed December 26, 1930. serial no. 504,946.

l the design-and corela-tion of various devices and apparatuses whereby printed ink may be subject to chemical, electrical and mechanical action for setting and conditioning the same to enable the, ink to withstand the.

stresses to which it is subject in the various printing operations, thereby eliminating offsetting.

Another object of the invention resides in the direct applicationof electrical discharges for the creation of ozone, light rays} and vibrations that have beneficial effects upon the printers ink for the obtainment of the objectives herein set forth.

g A feature of the invention resides in the direct application of radiant heat to the freshly printed ink for the creation of a pree liminarycondition, relying on a direct application of electrical discharges for final treatment of the ink and the production of ozone 0 and light rays having a direct reaction upon the constituents of the ink.

Generally stated, the invention comprises a method and apparatus for preventing off:

setting by subjecting a traveling web of pa- 5 per having freshly printed ink thereon first to the action of radiant heat and then to the action of electrical dischargesand the ozone and light rays created thereby, the web of paper being subjected to a cooling action at the point of subjection to the electrical discharges. I

YVith the above objectives in view and others obvious from a detailed consideration of the invention, the method will be better understood from a detailed consideration of the accompanying drawing, wherein- The figure is a diagrammatic view of one embodiment of the invention.

50 Having reference to the drawing, the numeral -1 designates a web of paper which in face is subject to electrical discharges and as .not only subject to a vibratory action due. to

its passage through the printing rolls 2 has arranged on its surface the printed matter.

The freshly printed ink on the reach A passes through a heater 3, preferably of the electric radiant type embodying a'plurality of deflectors 4 having a co-relation with the electric heating unit 5. I have found from actual practice that withthis type of heater the reach of paper may be brought to the required temperature. lt will be noted that there is a radiant heater arranged opposite each side of the web of-paperso that simultaneously 'both sides of the paper is subject to a heating action to facilitate the effect and the uniformity of the action. 7

The reach A passing around the feed roll 6 has its temperature reduced by means of the collector 7 This collector 7 embodies a.

nozzle8 fordrawing air over the paper Web and discharging the'same through the conduit 9. It is of course to be understood that theweb of paper may be subjected to other types of cooling devices, which may be arranged in convenient places other than illustrated.

The reach 13 of the web of paper with the partially conditioned ink thereon is passed through an ozonator 10, preferably of the electrical type so as to be self generating. In one of its forms this ozonator comprises a pair of wire grids 11 and 12 arranged on opposite sides of the reach B and paralleling the surfaces thereof and as these grids are of a metallicconstruction' itwill be appreciated that when subject to high potential currents through the leads 13 and 14, numer- 011s electrical sparks will pass therebetween and through the web of paper, the latter acting as a di-electri'c to enable the potential of the electrical discharges to build up the required voltage. Due to the fact that the grids 11 and 12 are of a wide area and parallel the surfaces of the web of paper, it will be appreciated that the entire printed surthese electrical discharges produce simultaneously light ways and ozone and vibrations,

it will be understood thatthe printed ink is the discharges but to the chemical action of ozone and light rays as well, which greatly facilitate the final conditioning of the in to revent ofi'setting.

s there are advantages to be derived from cooling the'web of paper as well as the generated ozone, I have illustrated a cooling apparatus shown in this particular instance as consisting of-cooling coils 16 connected to feed and discharge pipes 17 and 18.

I havefound from actual practice that the objectives sought after can be more quickly and efficiently reached by first preparing the ink fora better reaction to the treatments heretofore set forth. To accomplish this, I take a polymerizable oil such as tong oil and I process the same to a stage that polymerization is greatly enhanced. lfhis polymerization agent is then mixed with ordinary printing,ink previous to a printing operation. In the use of printing ink, conditioned as just set forth, polymerization reactions are enhanced and the time element considerably reduced.

' In the use of my method of treatment, a printed .web of paper in its passage through .the radium heater is subject to a high temperature preferably 300 F. which subjects the processed ink to a preliminary treatment for accomplishment among other things a polymerization-condition of the'ink. This action also prepares the ink for a better reaction with the electrical treatments as above set forth.

The ink conditioned as just set forth is subject to'a cooling action to more or less set the same for a better reaction with the new electrical discharges, ozone and electric rays created by the ozonator.

The ink is passed through the ozonator v and subjected to a multiplicity of minute electric. sparks which pass directly through the web of paper and through the contents of the ink for giving a final polymerization action and an oxidizing action thereto, thereby enabling the ink to withstand all stresses to which it is subjected in the passin of the web through its final operatiom ov facilitate matters, I provide a cooling apparatus which not only cools the web of paper for giving a final set to the ink but prevents deterioration of the ozone generated, thereby prolonging its activity 'uponthe printed ink.

In concluding, I wish to lay stress upon the fact that my specially prepared printing ink is subject to mechanical, electrical and chemical actions for giving the ink the necessary resistivity to resist distortion or ofi'setting and this is accomplished in a unique manner by the use of an ozonator in a particular relation with the web of paper so that the web of paper will be simultaneously subjected to the action of ozone,'electrical distypes of heaters may be utilized and various types of ozonators may be used and the vibratory effects, light ray efi'ects and ozone treatments applied in other manners and therefore I do not desire to be limited in protection in any manner whatsoever except as set forth in the following claims.

I claim:

1. A method of preventing ofi'setting in printing machines which consists in simultaneously subjecting opposite sides of a printed web of paper to the direct action of heat and cold and electric light rays.

2. A method of preventing offsetting in printing machines which consists in first treating ink to increase its polymerization action and then subjecting the same to the direct action of heat, chilled ozone and electric light rays.

3. A method of preventing offsetting in printing presses which consists in first subjecting the printed web. of paper to the action of heated air contacting simultaneously with opposite sides of the web of paper and secondly to ozone and electrical discharges and thirdly to a cooling action.

4. A method of preventing. ofi'setting in printing machines which consists in processing an oil to increase its polymerization action and mixing with stock ink and subjecting the ink when in printed condition first to the action of heat and then to the action of chilled ozone. r

5. A method of preventing ofl'setting in printing machines which consists in processdischarges.

6. A method of preventing offsetting of a printed web of paper which consists in subjecting the printed ink containing tongoil to the action of radiant heat and then to the action of electrical discharges passing directl-y through the printed web of paper.

-7. A method of preventing oifsetting of a printed web of paper which consists in subjecting the printed ink containing tong oil to the action of radiant heat and then to the action of electrical discharges passing directly through the printed web of paper, said web being subject to a cooling action while acted upon by said discharges.

In witness whereof I have hereunto set j m hand.

y I'IHOMAS F. PINDER.

charges and light rays, all three actions hav-. ing a desired effect upon the ink for the final conditioning thereof. 

